Learn Portuguese (Portugal): Poucas pessoas trabalham aqui.

Pouco means "little" or "few", but it changes to match the noun it describes. Since pessoas is a feminine plural noun, pouco becomes the feminine plural poucas.

Does pessoas only refer to women?

No, pessoas means "people" in general. The word itself is always grammatically feminine, even if the group of people includes men. Because the word is feminine, we must always use feminine adjectives and quantifiers with it, like Poucas.

Why does the verb trabalham end in -am?

The subject of the sentence is Poucas pessoas (Few people), which acts like the pronoun "they". For regular -ar verbs like trabalhar (to work), the "they" form is made by replacing the -ar ending with -am.

How do I pronounce the -am at the end of trabalham?

It sounds very different from English! A word-final -am in Portuguese is a nasal vowel sound, very similar to the Portuguese -ão. It sounds a bit like the "ow" in "cow" spoken through your nose, not like the English word "am".